Answer:
a) 3.74 circumference of earth
b)1.67× 10⁻⁸ sec
Explanation:
a) given,
time = 0.5 second
distance = speed × time
= 3 x 10⁸ × 0.5
= 1.5 × 10⁸ m
circumference of earth = 40075 km
= 4.01 × 10⁷m
distance with respect to circumference=[tex]\dfrac{1.5 \times 10^8}{4.01 \times 10^7}[/tex]
= 3.74 circumference of earth
b) distance = 5 m
time =[tex]\dfrac{distance}{speed}[/tex]
=[tex]\dfrac{5}{3\times 10^8}[/tex]
= 1.67× 10⁻⁸ sec
